Crowd wisdom and bias

Averaging removes noise. Does it remove bias?

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As this crowd grows, what can averaging remove?

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How it works & assumptions

Each estimate is 100 + bias + Normal(0,20²). A crowd mean has error RMSE √(bias²+400/n). Compare individual estimates with crowd means.

Independent normal errors with the same fixed additive bias. Shown trials are random samples; finite-run errors vary.

Random runs are reproducible from their setup links. Replay keeps the same seed; New random run changes it. A sample run need not equal the theoretical average.

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